Malicious PDF — malware analysis report

Static analysis result for SHA-256 54b41ac5d3375a7f…

MALICIOUS

PDF

63.1 KB Created: 2020-11-23 14:02:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fbabb497dd983615b71a077ad2384b10 SHA-1: 2c10f00316b80ba638c529d03cd7f108375f52e4 SHA-256: 54b41ac5d3375a7f923cb5ca7527d3be5fafacc59f7d0e4912c81771d63b732e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffnew.ru/123?utm_term=miata+body+kit+kbd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367290/normal_5fa23f856942b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488569/normal_5faffad67a13e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454425/normal_5fbb9f9b1dd15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369784/normal_5f91740094226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393029/normal_5f8f42ce33135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413575/normal_5fa922af2a2d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fapaga/samsung_3d_blu_ray_player_bd-d6500.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/national_book_award_2020_nominees.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/fefixekadin.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/mamofuzelul.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/carbon_steel_chemical_composition.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/23880194357.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/employee_experience_letter_format_in_word.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE70 4388 bytes
SHA-256: ce04293ffdd3ab8f914f57873ce2d88ce8eba929a41537a90b4a778d0e641272
font_01_sfnt_off0000bd64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD64 10220 bytes
SHA-256: 21ade303bd315f35e26404c9e974d6b1c521d74fe8c8334bc4ab63f317edc730
font_02_sfnt_off0000e074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE074 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2